Don Grossen slammed an 823 series that included a 299 game and Sean Knurek fired an 814 that included a perfect game to highlight Madison area bowling on Friday. Competing in the Schwoegler's Tiger League, Grossen started with games of 267 and 257 before falling a pin shy of perfection in his final game. Knurek's 10th career 300 came after games of 225 and 289 in the Sport Bowl Lions League....